fix issue only one item showing

after adding an item by clicking Create New and then adding another it
just replaced old item. Issue was it was using same model each time. I
believe fix is to just recreate the ItemView but there may be a better
way
removed the create view

to prevent memory leaks recreating view every time added logic to remove
and delete the ItemView
can put item in edit mode

added logic to be able to put ItemView in edit mode to edit an existing
coffee
update coffee item

added logic to refresh the views after a coffee has been updated
added logic for cancel

added logic to cancel edit of a coffee
added logic for delete

added the logic to delete an existing item from the list